﻿/**
 * Copyright (c) 2009 Quek Koon Kiat
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.kk.Utils
{
	import flash.events.Event;
	import flash.events.EventDispatcher;
	
 	public class FrameRateMeter extends EventDispatcher
 	{
  		private static var prevTime:uint;
  		private static var frameCounter:uint;
  		
		public function FrameRateMeter(parentObj:*):void 
		{
			trace("starting frameRateMeter");
			
			prevTime = 0;
			frameCounter = 0;
			
			parentObj.addEventListener(Event.ENTER_FRAME, onEnterFrame);
   		}//constructor end
		
		
		private function onEnterFrame(evt:Event):void
		{
			frameCounter++;
		}
		
		public function get frameRate():uint
		{
			var tempDate:Date = new Date();
			var dTime:int = tempDate.getMilliseconds() - prevTime;
			var tempCounter:uint = frameCounter;
			
			if (dTime < 0)
			{
				dTime += 1000;
			}
			
			frameCounter = 0;
			prevTime = tempDate.getMilliseconds();
			
			return uint(tempCounter * 1000 / dTime);
		}
		
  	}//class end
}